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' No. 749,024. PATENTED JAN. 5, 1904. J. L. CAMPBELL.

CATTLE GUARD. APPLICATION FILED 001229, 1903. 10 MODEL. 2 sums-sum 1.

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No. 749,024. PATENTED JAN. 5, 190

J. L. CAMPBELL.

CATTLE GUARD.

APPLICATION FILED OCT. 29, 1903.

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Patented January 5, 1904.

PATENT OFFICE.

JOHN L. CAMPBELL, OF WINNIPEGOSIS, CANADA.

CATTLE-G UARD.

SPECIFICATION formingpart of Letters Patent N 0. 749,024, dated January 5, 1904. Application filed October 29, 1903- $erial No. 179,112. (No model.)

dering along a railway; and it has forits object to provide a guard embodying simple, durable, and reliable means whereby when an animal strays upon a railway at a crossing the weight of the animal closes one or more gates, and thereby effectually prevents it from passing along the railway.

With the foregoing in mind the invention will be fully understood from the following de scription and claims when taken in connection with the accompanying drawings, forming part of this specification, in which- Figure l is a longitudinal vertical section of arailway equipped with my novel guard, the guard being shown in its normal open position. Fig. 2 is a broken cross-sectionillus trating the guard as 0lOS6d-7;. e., with its gates extending crosswise of the railway; Fig. 3 is a plan view of the guard. Fig. 4 is a transverse section of the same. Fig. 5 is a broken transverse section illustrating modified gates as closed. Fig. 6 is a detail elevation taken at right angles to Fig. 5. Fig. 7 is a broken transverse section illustrating another modified gate as closed. Fig. 8 is a detail broken side elevation illustrating said gate in its normal open position; and. Figs. 9 and 10 are a side elevation and an inverted plan respectively,illustratingmotion-transmitting means hereinafter referred to.

Referring by letter to the said drawings,and more particularly to Figs. 1 to 4 thereof, A'A are the rails of a railway, and B B the sleepers or ties thereof, the sleeper or tie B being longer than the others, Fig. 3, for a purpose which will presently appear. 0 is the platform of my novel guard, which is by preference located at a crossing of the railway. The said platform is preferably made up of a section a, arranged between the rails A, and sections b, arranged outside said rails. These sections. ct b are connected by transverse shafts D D, which are journaled in eyes 0 on the lower sides thereof and are provided with cranks d, journaled in eyes 6 on adjacent sleepers or ties B,as bestshown in Figs. 3and 4. The platform is by preference normallysupported in and returned to the-position illustrated by weighted arms F, arranged on the shaft D, and a spring E,disposed below the section. I desire it understood, however, that either the springE or the arms F may be used without the other forsuch purpose without involving a departure from thescope of my invention. GGarehorizontally-swinginggates mounted in suitable bearings on the tie B and provided with gears f; HH, stops arranged on one of the ties B and having for their purposeto limit the outward movement of the gates, Fig. 3; I I, gears mounted on the tie B and intermeshed with the gears fon the gates, and J J, rods connected at one end. to the shaft D and at their opposite ends to the gears I OK the center of said gears. The platform C and the cranks d of the shafts D D normally rest in the positions shown in Fig.

1. Consequently it will be observed thatwhen a cow or other animal strays upon the platform its weight will depress and move the platform endwise in the. direction indicated by arrow in Fig. 1, with the result that the gears I and F will be turned through a part of a revolution and the gates will be swung across the railway, as shown in Fig. 2, soas to preclude the animals wandering along the railway. It will also be observedthat when the animal steps off the platform the spring Eand weighted arms F will return the platform and the shafts DD to their normal positions, and thereby swing the gates G open, so as to prevent the same from obstructing the passage of trains.

G G, Figs. 5, and 6, are collapsible gates designed to be used in lieu of the gates G when the conditions are such as to entail the employment of collapsible gates. The said gates G respectively comprise a slotted upright g, fixed to and rising from a sleeper or tie, an upper vertically-movable bar h, pivoted in the uprightg and having an arm 2', a lower vertically-swinging bar j, pivoted at one end in the lower portion of the upright g, an outer vertical bar It, pivotally connected to the bars h and 7', rails Z, connected at one end to the bar 70 and pivotally connected at their opposite ends to the upright g, so as to enable them to swing vertically, a vertically-movable rod m, connected at its upper end to the arm 1', a bell-crank lever n, fulcrumed at 10 on the upright g and having its lower arm connected to the rod m, and a bar J, connected to the upper arm of the lever n. The rods J of the two collapsible gates are designed to be connected to the shaft D on the platform 0 in the same manner as the rods J before described. Consequently it will be seen that when the platform is depressed and moved endwise by an animal thereon the gates will be moved from their raised position (shown in dotted lines) to their closed position, (shown in full lines,) while when the platform is raised by the means before described the gates will be returned to their raised or collapsed position, so as to offer no obstruction to the passage of a train.

In the construction shown in Figs. 7 and 8 the gate G is carried by a transverse rockshaft M, journaled in suitable hearings on one of the ties, and it comprises a portion 1-, disposed between the rails A, and one or more portions r, disposed outside the rails. The rock-shaft M is provided at one end with a crankt, and this crank is designed to be connected by a rod J to the shaft D. From this it follows that when an animal gets upon and depresses the platform the gate G will be swung upwardly from its normal position below the tread of the rails, Fig. 8, to its closed position, Fig. 7, while when the animal passes oif the platform the gate will be returned to its normal position, so as to offer no obstruction to the passage of trains.

The construction shown in Figs. 9 and 10 is designed for use when it is desired to transmit motion directly from the shaft D to but one of the swinging gates. When this is done, synchronous motion is imparted to the other gate through the medium of sheaves u and a crossed belt o.

It will be appreciated from the foregoing that notwithstanding the fact that my novel cattle-guard is entirely automatic in operation it is simple and inexpensivein construction and embodies no delicate parts, such as are liable to get out of order after a short period of use.

I have entered into a detailed description of the constructions constituting the preferred embodiments of my invention in order to impart a full, clear, and exact understanding of the same. I do not desire, however, to be understood as confining myself to such specific construction and relative arrangement of parts, as such changes or modifications may be made in practice as fairly fall within the scope of my invention as claimed.

Having described my invention, what I claim, and desire to secure by Letters Patent, 13-

1. In a cattle-guard, the combination of a gate, avertically and endwise movable platform, transverse shafts journaled in suitable bearings on the platform and having cranks journaled at their lower ends in bearings on fixed supports, and normally pitched toward the gate, a connection between the platform and the gate for moving the latter by the former, and a spring for returning the platform to and normally holding said platform in a raised position subsequent to a depression thereof and for thereby returning the shafts to and normallyholding the same in such position that their cranks are normally pitched toward the gate.

2. In a cattle-guard, the combination of a railway,horizontally-swinging gatesarranged to obstruct the railway when closed, stops for limiting the outward movement of the gates, a vertically and endwise movable platform extending between the rails of the railway, a spring for returning said platform to its normal position subsequent toan operation thereof, transverse shafts journaled in suitable bearings on the platform, and having cranks journaled at their lower ends in bearings on ties of the railway, and normally inclined toward the gates, gears fixed with respect to the gates, gears mounted on the ties and intermeshed with the first-mentioned gears, and rods connected at one end to the gears and at their opposite ends to the second-mentioned gears off the center thereof.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOHN L. CAMPBELL.

Witnesses:

R. B. CULBERTSON, THOMAS F. STECKLEY. 

